Rocket Sanders‘ calculated recovery from offseason shoulder surgery has proven to be a double-edged sword for the South Carolina running back room. On the plus side, it has given other running backs an opportunity to prove themselves in Sanders’ absence. But it has also made putting together the depth chart, as well the team’s roster for road games, more difficult. “You look at all those guys. And I was talking to them today, ‘Well, we’re going on the road next week, and that on that travel roster’s going to be 60 people. Everybody can’t get on the bus,’” running backs coach Marquel Blackwell …